Rotary internal-combustion engine.



S. V. SMITH AND C. H. PARRIOTT. amm/INTERNAL comusnom ENGINE.APPLICATION FILED NOV. I3. |918. A1,320,182o Patented Oct. 28,1919.

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@UIMM m .Sl V. SMITH AND C. H. PARRIOTT.

ROTARY INTERNAL COMBUSTION ENGINE. APPLICATION FILED Nov. I3, ma.

1,320, l82 Patented Oct. 28, 1919.

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ROTARY INTERNAL COMBUSTION ENGINE. APPLICATION FILED Nov. 13. |918.

l 320, 1 82 I l Patented' Oct. 28, 1919.

3 SHEETS-SHEET 3- UNITED sTATEs PATENT orme.

SCOTT V. SMITH .AND CHARLES H. PARRIOTT, OF CHAUNCEY, ILLINOIS.

ROTARY INTERNAL-COMBUSTION ENGINE.

specification of Letters Patent.

Patented Oct. 28, 1919.

To all whom 'it may concern:

Be it known that we, SCOTT V. SMITH and- CHARLES H. PARnIoTT, citizensof the United States, residing at Chauncey, in the county of Lawrenceand State of Illinois, have invented new and `usefu1 Improvements inRotary Internal-Combustion Engines, 0f which the following is aspecification.

This invention relates to rotary internal combustion engines, the objectin view belng to provide an engine of the class referred to which iseconomical in the consumption of fuel,I powerful in operation and whichembodies few parts, being therefore economical to manufacture andmaintain in working condition.

By means of the construction hereinafter described, a long stroke isobtained, return strokes are eliminated, no fly wheel is required, aneven torque is produced, and all the side thrust and wear eliminated.

With the above and other objects in view,

` the invention consists in the construction,

combination and arrangement of parts, as herein described, illustratedand claimed.

In the accompanying drawings Figure 1 is an elevation of the engine withthe adjusting head or plate removed.

Fig. 2 is a vertical longitudinal section through the same.

Fig. 3 is an elevation taken from the opposite side of Fig. 1.

Fig. 4 is a fragmentary vertical section taken through the chargingvalve, and the adjacent portion of the compressing chamber.

Fig. 5 is a similar view taken through the charging valve and thecombustion chamber.

Fl'xg. 6 is a perspective view of one of the vanes or pivoted abutments.

Fig. 7 is a fragmentary section througha plurality of casings showingthe intake and exhaust manifolds.

Fig. 8 is a perspective view of a multiple port rotary valve used inconjunction with a plurality of rotors and casings.

Referring to the drawings, 1 designates the casingl of the engine whichis generally cylindrical comprising the peripheral wall 2 and thesidewalls or heads 3 and 4, the casing being supported at any suitableelevation by means of supporting feet 5 having ianged bases 6.

Extending centrally through and journaled in the heads of the casing 1is a rotary engine shaft 8 having fast thereon a generally cylindricalrotor 9 formed with wed e shaped recesses or pockets 10 in the periperythereof, saidv pockets being adapted to receive and wholly containoppositely arranged pivoted vanes or abutments A and B, two of suchvanes or abutments being shown.

Each ofthe vanes or abutments A and B have a hinge knuckle 10 which isjournaled in a socket 11 of corresponding shape in the rotor wherebysaid vane or abutment is adapted to swing outwardly and inwardly inrelation to the periphery of the rotor and the inner peripheral wall ofthe casing. Each vane or abutment is provided with a reinforcing web 12at one or both sides of which is arranged a spring 13 interposed betweena wall of said abutment or vane and the inner wall of the pocket orrecess in which said vane operates, said spring serving to press therespective vane outwardly and hold the same in fluid tight working'contact with the wall of the casing.

Within the casing 1 is a stationary abutment 14 against which theperiphery of the rotor works with a ground joint. Extending transverselythrough the casing and through said stationary abutment 14 is an exhaustchamber 15 which communicates by means of a port-16 inthe bottom thereofwith the lower-portion of the casing 1, underneath the rotor, the latterforming an explosion or combustion chamber 18 while the correspondingchamber 19 vabove the rotor constitutes the suction and compressionchamber. Above the exhaust chamber is an intake chamber 20 whichcommunicates by means of a port 21 with the suction and compressionchamber 19 and which alsoI communicates with an explosive fluid inletconnection 22 to which a carbureter is adapted to be attached. At theopposite side of the casing and within the same, is a rotary valvechamber 23 containing a tubular rotary valve 24 to which, and exteriorlyof the casing, is fastened a gear 25 Ldriven at. twice the speed ofanother larger gear 26 fast on the engine shaft. A port 27 leads fromthefarther end of the suction and compression chamber into the rotary valvecasing and another port 28 leads from said casing into the initial endof the combustion chamber. The rotary valveis provided with a singleport 29 to admit the cornpressed mixture toward the interior of saidvalve, and to release said compressed mixture from the valve into thecombustion chamber 18. 30 designates a bevel gear fast on the engineshaft for operating the spark timing mechanism not shown, the compressedcharge in the rotary charging valve being ignited by a plug 31 or thelike inserted through the adjacent head or plate of the motor directlyinto said rotary valve, the spark occurring just after one of the vanesor pivoted abutments A and B passes by the stationary abutment adjacentto said rotary valve.

In viewy ofk the foregoing description, taken in connection with theaccompanying drawings, the operation ofthe engine will now beunderstood. Starting with the vane or pivoted abutment A in the positionshown in Fig. 2, after it has just moved outwardly from its housedposition in the rotor, as said vane A moves to the left along thesuotion and compressing chamber 19, it sucks a charge of mixture intothe chamber 19 from the intake chamber and the carbureter connectedtherewith. i/Vhen said vane A reaches the stationary abutment at the.farther end of `the suction and compressing chamber, it uncovers theport leading to the rotary charging valve. The other vane B following inthe Wake of the vane .A, after passing the intake port, compressesmixture trapped in the suction and compressing chamber and forces themixture underV compression through the port at the farther end of thechamber 19 into the rotary charg- -close the inlet port. The vane B inmoving further uncovers said inlet port in order that the nextcompressed charge may likewise be forced into rotary charging valveafter the charge therein has been released. In the further movement ofthe vane B, the latter passes the outlet port from the rotary -chargingvalve, the port of said valve having just registered with said outletport gine, the combination of a stationary suband releases compressedair in the inner end of the combustion chamber 18 behind said.

vane B. Just at this moment, the charge is ignited by the plug andexpanding within the rotor valve and through the outlet port thereof andwithin the combustion chamber, drives the rotor around. In the meantime,the vane A has been forcing mixture under pressure into the rotarycharging valve and the operation just described with reference to thevane B is repeated with respect `to the vane A. There are thus twoexplosions or impulses for each revolution of the rotor. The vanes orpivoted abutments A and B act to force the burned gases from the chamber18 through the ports -at the farther end thereof and at the exhaustchamber and thence laterally outward to the atmosphere, exhausting atatmospheric pressure.

Only one unit has been described herein plurality of ports, one for eachunit casing.

and said orts may be arranged at such a number o degrees apart as todeliver the compressed mixture first to one rotor cas.- ing, and then toan adjoining rotor casing and so on throughout the series of units.

1. In a rotary internal combustion engine, the combination of astationary substantially cylindrical casing having oppositely arrangedfixed abutments, a centrally arranged engine shaft, a rotor fast on saidshaft and carrying oppositely arranged piv otally mounted vanes, therotor being formed with recesses into and out of which said vanes aremovable, yieldable means for pressing said vanes outwardly in workingcontact with the inner periphery of the casing, one of said stationaryabutments being formed with a charging inlet chamber having a portcommunicating directly with the interior of the rotor casing and alsohaving y, anexhaust chamber with a port leading diing valve, the latterturning suiliciently to rectly into said rotor casing, the oppositeVstationary abutment containing a valve chamber having an inlet port andan outlet port both communicating directly with the interior of therotor casing, and a tubular rotary charging valve working in said valvechamber and having a` port communicating successively with the saidinlet and outlet ports of said valve casing.

2. In a rotary internal combustion enpressing said vanes outwardly inworking f contact with the inner periphery of the casing, one of saidstationary abutments being formed with a charging inlet chamber having aport communicating directly with the interior of the rotor casing, andalso having an exhaust chamber with a port leading directly into saidrotor casing, the opposite stationary abutment containing a valvechamber having aninlet port and an outlet port both communicatingdirectly with the interior of the rotor casing, and a tubular` rotarycharging valve Working in said valve chamber and having a'portcommunicating successively with the said inlet and outlet portsof saidvalve casingz each ofsaid vanes 'operating along one portion of itstravel to draw in a fresh charge of explosive fluid and also tovcompress a charge of such iuid and force the same 1n said rotarycharging valve and operating during another portion of its travel to`:force the burned gases into said Y exhaust chamber While being actedupon by the expanding mixture behind it.

3. In a rotary internal combustion engine,l the combination of astationary substantially cylindrical Y casing having oppositely arrangedixed abutments, a centrally arranged engine shaft, a rotor fast on saidshaft and carrying oppositely arranged pivotally mounted vanes, therotor being formed with recesses into and out of which said vanes aremovable, yieldable means for pressing said vanes voutwardly in workingcontact with the inner periphery of the casing one tures.

of said stationary abutments being formed with a charging inlet chamberhaving a port communicating directly with the interior of the rotorcasing and also having an exhaust chamber with a port leading directlyinto said rotor casing, the opposite stationary abutment contalning avalve chamber having an inlet port and an'outlet port both communicatingdirectly with the interior of the rotor casing, a tubular rotarycharging valve working in said valve chamber and having a portcommunicating successively with the said inlet and outlet ports of saidvalve casing, and means interposed between said rotary charging valveand the engine shaft'for rotating said valve at twice the speed of theengine shaft.

In testimony whereof we aix our signascorr v. SMITH.

CHARLES H. PARRIoT'r.

